as.tac: Creates a tac object from a data.frame

In ropensci/tacmagic: Positron Emission Tomography Time-Activity Curve Analysis

Description

tac objects can be created from data.frame objects with 'as.tac()'. The time and activity units must be specified as arguments if not already set as attributes in the data.frame. The columns of the data frame are the regional time activity curves, with the column names the names of the ROIs.

Usage

as.tac(x, time_unit = NULL, activity_unit = NULL)

Arguments

x	data.frame with start, end time and tac data
time_unit	NULL if in data.frame or set to "seconds" or "minutes"
activity_unit	NULL if in data.frame or set to "kBq/cc", "Bq/cc", "nCi/cc"

Details

If the time_unit and activity_unit attributes are already in the data.frame, they do not need to be set again, but otherwise they will need to be specified in the input parameters.

Value

tac object

See Also

Other Loading functions: load_tac, load_voistat, load_vol

Examples

manual <- data.frame(start=c(0:4), end=c(2:6), 
                     ROI1=c(10.1:14.2), ROI2=c(11:15))
manual_tac <- as.tac(manual, time_unit="minutes", activity_unit="kBq/cc")

ropensci/tacmagic documentation built on Feb. 11, 2020, 9:34 p.m.